Modelling the nucleon axial form factor in a finite volume.

Abstract

Lattice quantum chromodynamics is to date the only way to solve QCD nonperturbatively from first-principles. Although it has enjoyed much success there are still many challenges involved in matching calculated observables with their experimental values. In this thesis we use a chiral model to study the finite volume effects on the axial form factor in order to understand the discrepancy between lattice and experimental results. We also examine the possibility of extra corrections arising from a spin-flip arising through the tensor interaction between neighbouring nucleons on the periodic lattice.